Improvement in window-blinds



UNITED STATES PATENT OFFICEO A. I). SMITH, OF STERLING, ILLINOIS.

IMPROVEMENT IN wlNDow-BLlNDs.

Specication forming part of Letters Patent No. 56,282, dated July 10, 1866.

dow-Blinds; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, formin g part of this specification.

The present invention relates to that class of window-blinds in which the slats composing the same are hung by suitable tenons at each end, so as to turn within the side pieces ofthe blind-frame, and the several slats of each section connected together with a rod, by the moving of which up and down the slats were either opened from or closed upon each other; and it consi sts in a novel attach ment to the said slat-rod, whereby the slats can be, when opened or closed more or less, secured and held in such position, the slats, when closed upon each other, and the blinds shut by means of this novel attachment, being impossible to move from the outside, thus becoming, in a measure, burglar-proof.

In accompanying plate of drawings my im- .v provement in window-blinds is illustrated, Figure l being a front view of a blind with it applied thereto, and Fig. 2 a transverse vertical section taken in the plane of the line x x, Fig. l.

Similar letters of reference indicate like parts.

Ain the drawings represents a window-blind having a series of slats, B B, which, at each end, are hung by tenons in the ordinary manner within the side pieces, C G, ofthe blindframe, these slats being connected by a common center vertical rod, D, in such a manner that by the moving of it either up or down they will be either opened or closed, as the case may be. In the lower end of the rod D is hung one end of a lever frame ol catch, E, the other end of which passes in and between the notched or rack bar Gr, secured at each end by screws, or in any other proper manner, to the lower rail, H, of the blind-frame. and has its lower cross-bar, I, enga-ged with the notches of suoli bar G, and so held by means of a bent spring, J, properly arranged therefor, and secured'at one end to the blind-rail, which spring acts through a plate, K, interposed between it and the said lever-frame E.

Lis a handle or th um b-piece formed upon the lower end of lever-frame E, by the depressing and bearing` against of which with the thumb or finger of the hand the lever-frame E is disengaged from the notch-bar, thus leaving the Slat-rod, to which it is hung, free to be either moved up or down, according as it may be desired to either open from or close the blindslats upon eachother, the slats being held in any position to which they may be brought and within the limit ot' their swing upon the blind-frame by the interlocking of the leverf'rarne E with the rack or notched bar G, as is obvious without further explanation, the advan tages of which are manifest.

I claim as new and desire to secure by Letters Patent- Connecting the slat-rod D to the blind-frame through a catch and rack or notched bar, when 

